pvxs Access/list problem

["Heinz Junkes \(FHI\) via Tech-talk" <tech-talk@aps.anl.gov>]

Hi,
I have RTEMS with EPICS7/PVXS running on the IOC.

```
gonzo> pvxsi
Host: linux-x86_64
Target: RTEMS-beatnik RTEMS gcc
Toolchain
    __cplusplus = 201103
    GCC 15.2.0
    _GLIBCXX_USE_CXX11_ABI = 1
    __GLIBCXX__ 20250808
Versions
    PVXS 1.4.0 (1.4.0-4-g021bcb4a06224ed8c0e8-dirty)
    EPICS 7.0.9.1-DEV
    libevent 2.2.0-alpha-dev
Runtime
    uname() -> RTEMS Node 1 7.0.0  PowerPC/Generic (classic FPU)
    epicsThreadGetCPUs() -> 1
    osiLocalAddr() -> 141.14.128.12
    osiSockDiscoverBroadcastAddresses() ->
        141.14.143.255
Effective Client config from environment
    EPICS_PVA_ADDR_LIST1.14.143.255
    EPICS_PVA_AUTO_ADDR_LIST=NO
    EPICS_PVA_BROADCAST_PORTP76
    EPICS_PVA_CONN_TMO0
    EPICS_PVA_INTF_ADDR_LIST=0.0.0.0
    EPICS_PVA_NAME_SERVERS    EPICS_PVA_SERVER_PORTP75
Effective Server config from environment
    EPICS_PVAS_AUTO_BEACON_ADDR_LIST=NO
    EPICS_PVAS_BEACON_ADDR_LIST1.14.143.255
    EPICS_PVAS_BROADCAST_PORTP76
    EPICS_PVAS_IGNORE_ADDR_LIST    EPICS_PVAS_INTF_ADDR_LIST=0.0.0.0
    EPICS_PVAS_SERVER_PORTP75
```
Server:
```
gonzo> pvxsr
EPICS_PVAS_AUTO_BEACON_ADDR_LIST=NO
EPICS_PVAS_BEACON_ADDR_LIST1.14.143.255
EPICS_PVAS_BROADCAST_PORTP76
EPICS_PVAS_IGNORE_ADDR_LISTEPICS_PVAS_INTF_ADDR_LIST=0.0.0.0
EPICS_PVAS_SERVER_PORTP75
Source: __builtin prio=-1
Source: __server prio=-1
Source: qsrvSingle prio=0
Source: qsrvGroup prio=1
```
PVs:
```
gonzo> pvxsl
my:custom:pv
rtems:aSubExample
rtems:ai1
…
```
myExampleApp/src/pvxsAddPV.cpp
::::::::::::::
#include <pvxs/iochooks.h>
#include <pvxs/sharedpv.h>
#include <pvxs/server.h>
#include <pvxs/nt.h>
#include <initHooks.h>
#include <epicsExport.h>

using namespace pvxs;

static void myinitHook(initHookState state) {
    if(state != initHookAfterIocBuilt)
        return;

    // Create a SharedPV
    auto initial = nt::NTScalar{TypeCode::Float64}.create();
    initial["value"] = 42.0;

    auto pv = server::SharedPV::buildMailbox();
    pv.open(initial);

    // Add to the running QSRV2 server
    ioc::server().addPV("my:custom:pv", pv);
}

static void myregistrar() {
    initHookRegister(&myinitHook);
}

extern "C" {
    // needs matching "registrar(myregistrar)" in .dbd
    epicsExportRegistrar(myregistrar);
}
```
When I try to access the PVs via pva, it doesn't work, and unfortunately I don't understand where the problem could be.

Broadcast pvlist does not show up the IOC (141.14.128.12)

```
(base) hactar:~ junkes$ pvlist
GUID 0x0D5DC20423F82D6367A9991D version 2: tcp@[ 141.14.131.228:42479 ]
GUID 0x29A411690000000047502D2E version 2: tcp@[ 141.14.137.64:5075 ]
GUID 0x3BD94CBB98B48A44F3222CAA version 2: tcp@[ 141.14.137.82:5075 ]
GUID 0x3D28C96800000000332CF600 version 2: tcp@[ 141.14.135.248:5075 ]
GUID 0x412CE9BBB99971C4925B7F98 version 2: tcp@[ 141.14.136.101:5075 ]
GUID 0x78A51380147E8E0A16815C4A version 2: tcp@[ 141.14.135.182:43725 ]
GUID 0x7F1F3778BDA21463248755EF version 2: tcp@[ 141.14.135.181:39019 ]
GUID 0x9E7BB02B21880EF8374DC25A version 2: tcp@[ 141.14.135.182:5075 ]
GUID 0xA2D6A7048B0325099A66752E version 2: tcp@[ 141.14.135.181:5075 ]
GUID 0xADE023B474DF8FD6ACC071D7 version 2: tcp@[ 141.14.131.228:5075 ]
GUID 0xB2FA0D6900000000E447A310 version 2: tcp@[ 141.14.135.73:5075 ]
GUID 0xBD17A7945C075D000CB3D8FA version 2: tcp@[ 141.14.136.102:5075 ]
GUID 0xC0C2E391F3D2CD759A1A9506 version 2: tcp@[ 141.14.140.98:5075 ]
GUID 0xEE4C0E6900000000842D1610 version 2: tcp@[ 141.14.137.80:5075 ]
GUID 0xF2D7806100000000509A8E35 version 2: tcp@[ 141.14.136.67:5075 ]
GUID 0xF3072338078D3E052A4F58E4 version 2: tcp@[ 141.14.134.173:5075 ]
```

Unicast request show the PVs:
```
(base) hactar:~ junkes$ pvlist 141.14.128.12
my:custom:pv
rtems:aSubExample
rtems:ai1
```

Debug :
```
(base) hactar:~ junkes$ pvlist -d
2025-11-10T10:04:36.351 Broadcast address #0: 141.14.128.12:5076.
2025-11-10T10:04:36.352 UDP Tx (37) -> 141.14.128.12:5076

(base) hactar:~ junkes$ pvlist -d 141.14.128.12
Query to 141.14.128.12
epics:nt/NTURI:1.0
    string scheme pva
    string path server
    structure query
        string op channels

2025-11-10T10:05:23.018 Creating datagram socket from: 0.0.0.0:52478.
2025-11-10T10:05:23.018 Broadcast address #0: 141.14.128.12:5076. (unicast)
2025-11-10T10:05:23.018 Setting up UDP for interface 141.14.128.70/255.255.240.0, broadcast 141.14.143.255, dest <none>.
2025-11-10T10:05:23.018 Creating datagram socket from: 141.14.128.70:5076.
2025-11-10T10:05:23.018 Creating datagram socket from: 141.14.143.255:5076.
2025-11-10T10:05:23.019 Setting up UDP for interface 169.254.104.63/255.255.0.0, broadcast 169.254.255.255, dest <none>.
2025-11-10T10:05:23.019 Creating datagram socket from: 169.254.104.63:5076.
2025-11-10T10:05:23.019 Creating datagram socket from: 169.254.255.255:5076.
2025-11-10T10:05:23.019 Creating datagram socket from: 224.0.0.128:5076.
2025-11-10T10:05:23.019 Local multicast enabled on 127.0.0.1/224.0.0.128:5076.
Execute
2025-11-10T10:05:23.019 Connecting to PVA server: 141.14.128.12:5075.
2025-11-10T10:05:23.019 Opening socket to PVA server 141.14.128.12:5075, attempt 1.
2025-11-10T10:05:23.019 Socket connected to PVA server: 141.14.128.12:5075.
2025-11-10T10:05:23.019 Acquiring transport to 141.14.128.12:5075.
2025-11-10T10:05:23.022 Connected to PVA server: 141.14.128.12:5075.
2025-11-10T10:05:23.023 Releasing TCP transport to 141.14.128.12:5075.
2025-11-10T10:05:23.023 TCP socket to 141.14.128.12:5075 is to be closed.
2025-11-10T10:05:23.023 UDP socket 0.0.0.0:0 closed.
2025-11-10T10:05:23.023 UDP socket 141.14.128.70:5076 closed.
2025-11-10T10:05:23.024 UDP socket 141.14.143.255:5076 closed.
2025-11-10T10:05:23.024 UDP socket 169.254.104.63:5076 closed.
2025-11-10T10:05:23.024 UDP socket 169.254.255.255:5076 closed.
2025-11-10T10:05:23.024 UDP socket 224.0.0.128:5076 closed.
my:custom:pv
rtems:aSubExample
rtems:ai1
…
```

Unfortunately, reading the PVs doesn't work either:
```
(base) hactar:~ junkes$ env |grep EPICS_PVA
EPICS_PVA_ADDR_LIST1.14.128.12
EPICS_PVA_AUTO_ADDR_LIST=NO
(base) hactar:~ junkes$ pvget rtems:aiExample
Timeout
rtems:aiExample (base) hactar:~ junkes$ pvget my:custom:pv
Timeout
```

Does anyone have any idea what I'm overlooking?

Danke Heinz
------------------------------------------------------------------------------
Fritz-Haber-Institut  | Phone: (+49 30) 8413-4270
Heinz Junkes          | VC: https://zoom.fhi.berlin/junkes
Faradayweg 4-6        | Visitors: Hittorfstrasse 29 (Bld S (Slough House) )
D - 14195 Berlin
------------------------------------------------------------------------------
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All sort of things cropping up at the last moment. Uh, how are we for time?”
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